656004554371 has 2 divisors, whose sum is σ = 656004554372. Its totient is φ = 656004554370.

The previous prime is 656004554369. The next prime is 656004554393. The reversal of 656004554371 is 173455400656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656004554371 - 2¹ = 656004554369 is a prime.

Together with 656004554369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (656004554771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328002277185 + 328002277186.

It is an arithmetic number, because the mean of its divisors is an integer number (328002277186).

Almost surely, 2^656004554371 is an apocalyptic number.

656004554371 is a deficient number, since it is larger than the sum of its proper divisors (1).

656004554371 is an equidigital number, since it uses as much as digits as its factorization.

656004554371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 656004554371 in words is "six hundred fifty-six billion, four million, five hundred fifty-four thousand, three hundred seventy-one".